The newspaper, citing unnamed US officials and lawmakersbriefed on the intelligence, said on its website on Thursdaythat a secretive military group known as Unit 450 had beenmoving the stocks around for months to help avoid detection ofthe weapons.
US and Israeli intelligence agencies and Middle Easternofficials still believe they know the location of most of thegovernment's chemical weapons supply, the Journal said.
But "we know a lot less than we did six months ago aboutwhere the chemical weapons are," one official was quoted assaying.